Ok here are the photos I took while I was doing it.
Firstly remove the 5 bolts securing the selector housing and withdraw it vertically:
Note the position of the gear selectors inline for reattachment:
Undo the 6 or so bolts securing the gearbox to the bell housing:
As you withdraw the gearbox from the housing, a fork attached to the bell housing prevents you from fully extracting the gearbox, undo the bolts indicated to detach the fork:
One of the selectors is attached to the fork via this plunger head, and can be popped out by yanking it if required, we found ours had come out. Check that it is correctly secured when reassembling:
Once that's done, you should be able to withdraw the input shaft from the bell housing, and separate the gearbox, at which point you can inspect and replace your input shaft bearing indicated, making a note of its position on the shaft, I used a mallet and screw driver to take off the old one, and a bit of wood to bash the new one (pictured) on, I took the opportunity to spray it all clean with about 2 cans of cleaning solvent:
Looking at the reverse side of the bell housing, you can see the input shaft oil seal, this took a bit of work to get out and to replace, screwdriver to bash the old one out, and a bit of dowel to tap the new one in, mine distorted a bit as I did this, but I was able to bend it back into shape with a driver once I had it in place:
When reassembling use sealant to prevent any leaks, I used Locktite, not sure if it's the right one, it's an anerobic sealant, was the same colour and they use it all the time on the machine gaskets at work, I'll post the product details later if anyones interested:
(we were a bit too liberal in this picture):
To refit the box, just reverse the process above, good luck!
Bearings bottom and seals top, new to the left, old to the right, inner race of old bearing pitted from grinding, bearing walls non-existant, replacement part for a Punto Mk2 1.2 8v engine is an SKF explorer 6204-2RSH, same as OE part and purchased from
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=230260988866&ssPageName=STRK:MEWN:IT&ih=013, I have no idea about gearboxes or bearings for them I simply rang the bloke in the advert for part information:
Hope this helps!
Just did a quick search and it seems they're a lot cheaper to buy elsewhere, the benefit of hindsight!
http://www.bearing-king.co.uk/product/538
Here's the relevant picture of the inspection hole in the top of the bell housing. It's hidden under a coolant hose so I had to push this out of the way:
